NASCAR driver Brian Pack passed away Friday in North Carolina following injuries sustained in a motorcycle accident.“NASCAR is deeply saddened to learn of Brian's passing, and our thoughts and prayers go out to his family and friends,” said Jim Hunter, NASCAR vice president of corporate communications. Pack, 34, from Walkertown , N.C. , was a regular in the Modified division at Bowman Gray Stadium in Winston-Salem , N.C. , and on the NASCAR Whelen Southern Modified Tour. 